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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Reference
Endpoint:
toxicity to aquatic algae and cyanobacteria
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:
Justification for type of information:
Based on all the available algae data on rare earth compounds it is clear that phosphate depletion and growth inhibition are concurrent and hence it is not possible to distinguish between phosphate deprivation effects in the algae and potential direct effects of bioavailable Ytterbium trifluoride on algal growth. Please refer to attached justification for further information.

Description of key information

Based on all the available algae data on rare earth compounds it is clear that phosphate depletion and growth inhibition are concurrent and hence it is not possible to distinguish between phosphate deprivation effects in the algae and potential direct effects of bioavailable Ytterbium trifluoride on algal growth.

Key value for chemical safety assessment

Additional information